Swift Flat Wire Assist Springs 65mm ID (2.5") single*Images are for reference only, the actual product may vary. Like our helper springs, the assist springs are designed to be fully compressed at static height. Every one of our assist springs compress to the exact same height. This allows drivers to change assist springs without resetting the perch on the coilovers so the ride height isnt affected. Heavier rates of assist springs over helper springs are used to fine tune the rebound travel of the